Wideband patch antenna module

Abstract

Disclosed is a wideband patch antenna module where two feeding points are formed on a lower patch at a preset angle therebetween, whereby ultra-wideband characteristics receiving both a GPS signal and a GLONASS signal may be realized, and antenna size and manufacturing costs may be minimized. The wideband patch antenna module includes a base layer; a radiation patch provided on a top surface of the base layer; a lower patch provided at a bottom surface of the base layer; a first feeding point provided at a bottom surface of the lower patch; and a second feeding point provided at the bottom surface of the lower patch, wherein an imaginary line connecting the first feeding point and a center point of the lower patch intersects with an imaginary line connecting the second feeding point and the center point of the lower patch.

The invention claimed is: 
     
       1. A wideband patch antenna module comprising:
 a base layer; 
 a radiation patch provided on a top surface of the base layer; 
 a lower patch provided at a bottom surface of the base layer; 
 a first feeding point provided at a bottom surface of the lower patch; 
 a second feeding point provided at the bottom surface of the lower patch; 
 a first low-noise amplifier coupled to the first feeding point, the first low-noise amplifier removing noise of a linearly polarized signal outputted from the first feeding point and amplifying the linearly polarized signal outputted from the first feeding point; 
 a second low-noise amplifier coupled to the second feeding point, the second low-noise amplifier removing noise of a linearly polarized signal outputted from the second feeding point and amplifying the linearly polarized signal outputted from the second feeding point; 
 a hybrid coupler generating a phase difference to the linearly polarized signal amplified from one of the first low-noise amplifier and the second low-noise amplifier, and combining the linearly polarized signal to which the phase difference is generated with the linearly polarized signal outputted from a remaining amplifier so as to generate a circularly polarized signal; and 
 a saw filter passing only a GPS signal and a GLONASS signal of the circularly polarized signal and attenuating remaining frequencies, 
 wherein an imaginary line connecting the first feeding point and a center point of the lower patch intersects with an imaginary line connecting the second feeding point and the center point of the lower patch. 
 
     
     
       2. The wideband patch antenna module of  claim 1 , wherein the lower patch includes:
 a first feeding opening in which the first feeding point is inserted; and 
 a second feeding opening in which the second feeding point is inserted. 
 
     
     
       3. The wideband patch antenna module of  claim 1 , wherein the imaginary line connecting the first feeding point and the center point of the lower patch intersects with the imaginary line connecting the second feeding point and the center point of the lower patch at a preset angle in a range of 70 to 110 degree angles. 
     
     
       4. A wideband patch antenna module comprising:
 a base layer; 
 a radiation patch provided on a top surface of the base layer; 
 a first feeding pin provided with a side that is in contact with a bottom surface of the radiation patch by passing through the base layer; 
 a second feeding pin provided with a side that is in contact with the bottom surface of the radiation patch by passing through the base layer; 
 a first low-noise amplifier coupled to the first feeding pin, the first low-noise amplifier removing noise of a linearly polarized signal outputted from the first feeding pin and amplifying the linearly polarized signal outputted from the first feeding pin; 
 a second low-noise amplifier coupled to the second feeding pin, the second low-noise amplifier removing noise of a linearly polarized signal outputted from the second feeding pin and amplifying the linearly polarized signal outputted from the second feeding pin; 
 a hybrid coupler generating a phase difference to the linearly polarized signal amplified from one of the first low-noise amplifier and the second low-noise amplifier, and combining the linearly polarized signal to which the phase difference is generated with the linearly polarized signal outputted from a remaining amplifier so as to generate a circularly polarized signal; and 
 a saw filter passing only a GPS signal and a GLONASS signal of the circularly polarized signal and attenuating remaining frequencies, 
 wherein an imaginary line connecting the first feeding pin and a center point of the base layer intersects with an imaginary line connecting the second feeding pin and the center point of the base layer. 
 
     
     
       5. The wideband patch antenna module of  claim 4 , wherein the imaginary line connecting the first feeding pin and the center point of the base layer intersects with the imaginary line connecting the second feeding pin and the center point of the base layer at a preset angle in a range of 70 to 110 degree angles. 
     
     
       6. The wideband patch antenna module of  claim 4 , wherein the base layer includes:
 a first feeding hole through which the first feeding pin is inserted; and 
 a second feeding hole through which the second feeding pin is inserted. 
 
     
     
       7. The wideband patch antenna module of  claim 4 , further comprising:
 a lower patch provided with a third feeding hole through which the first feeding pin is inserted and with a fourth feeding hole through which the second feeding pin is inserted, the lower patch being provided at a bottom surface of the base layer.